I'm dealing with a problem with my sam3a:
I need to independend PWM Channels.

Channel 0 is configured as sychronous channel and the period update is made over PDC.
Channel 1 should work independent and the periods are set manually over PWM_CPRDUPD.

Actually both channels are working perfect as long as I just initialise one of them.

The problem now is, that as soon as I set the UPDM = 2 (Automatic update over PDC for Channel 0), Channel 1 stops working.
Why this?
Is it not possible to use one channel updated over PDC and another running manually?